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If you have documentation or actual experience with the PSL,
we would like to hear it.
"Home
In On The Range" by Steve Ciarcia, Byte, Nov 1980. p32
"An
Ultrasonic Measuring Tape" by Steve Ciarcia, Byte, Nov
1978. p114
"Ultrasonic
Radar" by Ronald M. Jackson, Electronics Now, Sep 1993
pg 31-37, 86
"SONAR
as I Have Done it" by Dennis Clark
Modifying
Sonar Ranging Modules from Late Model Autofocus Cameras
- Jim Remington
Polaroid/Senscomp
Sonar Ranging Primer (and others!) Acroname
614906 Polaroid Ranging Module used in SX-70 camera
TI SN28827 Sonar Ranging
Module (1983, maybe even earlier...)
TL851 Sonar
Ranging Control
TL852 Sonar
Ranging Receiver
SensComp (bought
Polaroid's 6500 stuff)
SensComp
Ultrasonic Components (includes the TL851 &
TL852)
Ranging
Transformer
Ranging
Coil
420
kHz Ceramic Resonator (Murata)
Series
600 Instrument Grade Ultrasonic Sensors
Distance Probe w/Motion & Mechanics Module
57F7922 (M&M module) (yellow box)
The Distance Probe uses the same ultrasonic (sound)
technology that Polaroid Cameras use - measure
the time it takes to send out an ultrasonic pulse and wait
for that sound wave to bounce off an object and return to
the source. The Distance Probe has an accuracy of ± 7 mm
over its entire temperature range (0 ºC to 52 ºC). The
Probe range is 0.4 m to 10 m.
Distance Probe (De)struction
Snapped off one of the flat plate
mounting flippers? from my distance probe. Upon further
investigation, there are four latches in the square body
that the tips were hot glued into place... Looks like
early versions had four working latches which failed over
time. This left the Distance Probe unable to fasten to a
vertical plate, or whatever it was to attach to.
The ultrasonic / sonar transducer is unmarked. 36.88mm /
1.452" dia, 1.36mm / 0.055" thick.
Distance Probe Components
Just the Ultrasonic Transducer, a cable
strain relief, a 1/8" mono jack, and the (brittle) black
plastic case. But, there is a bright side. The Ultrasonic
module is a Polaroid 6500, one of the most common robotic
sensors in use today.
Motion & Mechanics Module Components
I don't have an M&M module, but since the
Polaroid 6500 is the ONLY probe for this, my bet is that
the M&M is based on the Polaroid Ultrasonic Ranging
Module, -OR- the TI Ranging Module... (both use the
Polaroid 6500 sensor)
Polaroid Ultrasonic Components Group OEM Product List
612366 7000 Transducer
604142 Transducer Instrument grade
607281 Environmental Transducer
607943 Environmental Housing
615077 6500 Ranging Board
614095 Coil for Ranging Board
614096 Transformer for Ranging Board
607220 Ceramic Resonator
604789 Cable Assembly
614904 Digital Chip TL851 (6" to 35')
614905 Polaroid Digital Chip (2'to 24')
614906 Polaroid Analog Chip
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